they could easily do it, all a person would have to do is have a 2nd copy of the game on their computer.
But SOE wouldnt do it, because it would mean supporting 2 combat systems. And sadly even thoe everyone that would play on the CR1 server would be fine with saying "just patch it to how it was before CR2 hit, and then dont do any more bug fixes, adding new content, etc..." SOE still wouldnt go for it.
Only chance anyone really has at playing CR1 again would basically be to cross your fingers and hope one day someone comes out with an emulator, and thats probably never going to happen.
ehh, I liked the old combat but I'd much rather have other things worked on than this.